I have to warm up before starting the lesson ?

Hi, I'm doing the 30day course and I wonder if I have to do the beginner warm-up or the daily warmup routine  before starting a lesson.

Yes, we recommend you do the warmup from day 2 (or another warmup of your choosing), since most of the 30-day lessons focus on one specific area and don't include a comprehensive warmup. Here's an article that may help answer other questions related to using the beginner course!